# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1194197240 -3600
# Node ID 53b37a00af29298315848105adc77d1028926fb7
# Parent  26517d26da42763c4c5c0658fc744c8478655d03
Added tests for globals not initialised at the top level of the modules in which
they reside.

diff -r 26517d26da42 -r 53b37a00af29 micropython/inspect.py
--- a/micropython/inspect.py	Sat Nov 03 02:59:43 2007 +0100
+++ b/micropython/inspect.py	Sun Nov 04 18:27:20 2007 +0100
@@ -418,6 +418,11 @@
             if isinstance(value, Module) and not value.loaded:
                 del self[name]
 
+            # Complain about globals not initialised at the module level.
+
+            if isinstance(value, Global):
+                print "Warning: global %r in module %r not initialised at the module level." % (name, self.name)
+
     # Namespace methods.
 
     def store(self, name, obj):
@@ -619,7 +624,7 @@
             for name in node.names:
                 self.namespaces[-1].make_global(name)
                 if not self.has_key(name):
-                    self[name] = None
+                    self[name] = Global()
 
     def visitIf(self, node):
         for test, body in node.tests:
@@ -733,6 +738,15 @@
 
     pass
 
+class Global:
+
+    """
+    A reference to an object assigned to a global from outside the module
+    top-level.
+    """
+
+    pass
+
 # Built-in types initialisation.
 
 class Builtins(Module):
@@ -757,9 +771,13 @@
             'UnicodeTranslateError', 'UnicodeWarning', 'UserWarning',
             'ValueError', 'Warning', 'ZeroDivisionError',
             'bool', 'buffer', 'complex', 'dict', 'file', 'float', 'int', 'list',
-            'long', 'object', 'slice', 'str', 'tuple', 'type', 'unicode']:
+            'long', 'object', 'slice', 'str', 'tuple', 'type', 'unicode',
+            'xrange']:
             self[key] = Class(key, self.full_name())
 
+        for key in ['id', 'len']:
+            self[key] = Function(key, self.full_name(), ['arg'], 0, 0)
+
 builtins = Builtins()
 
 # vim: tabstop=4 expandtab shiftwidth=4